Dumping-vehicle.



D. BIRSTLEH.

DUMPING' vsmcua.

MPLICATION FILED OCT- 14. 1915'.

Patented Sept. 12,1916.

2 SHEETS-SHEET I.

D. BIRSTLER.

DUMPING VEHICLE.

APPLICATION r1120 on. 14. 19 15.

Patented Sept. 12,1916

2 SHEETS-SHEET 2.

DANIEL BIRSTLER, or BROOKLYN, NEW YORK.

DUMPING-VEHICLE.

Specification of Letters Patent.

Patented Sept. 12, rain.

Application filed October 14, 1915. Serial No. 55,787.

To all whom it may concern:

Be it known that I, DANIEL BIRSTLER, a

subject of the Emperor of Austria-Hungary,

residing'atgBrooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Dumping- Vehicles, of which the followingis a specification.

The present invention relates to improvements in that type of motor propelled dumping vehicles where the motor which propels the vehicle is also used for elevating and lowering the body of the Vehicle. And the general object thereof is to provide in a self-propelled dumping vehicle, mechanism Which will operate automatically to disconnect the dumping mechanism from the motor when the vehicle body is at either extreme of its-tilting movement. And to this end the invention resides in providing a ram or lifting member for the vehicle body effecting a detachable connection between the ram and the motor, and adapting the ram to operate the connection automatically to disconnect the ram from the motor when the ram is at the extreme of its upward or downward movement.

Other objects will appear and be better understood from that embodiment of my invention of which the following is a specification, reference being had to the ELCCOIII? panying drawings forming parthereof, in which:

Figure 1 is a side elevation of a motor propelled dumping vehicle provided with my invention. Fig. 2 is a detail side elevation of the invention. partly in elevation and section and looking at right angles to Fig.;2. Fig. 4 shows the invention partly in vertical longitudinal section and in side elevation. Fig. 5 is a detailperspective of the ram. Fig. 6 1s a view similar to Fig. 5 of the mechanically operated shifting mechanism with the yoke removed. Fig. 7 is a view similar to Fig. 6 of a portion of the hand operated shifting mechanism. Fig. 8 is a horizontal section taken on the line 8-8 of Fig. l, looking in the direction of the arrow.

The invention hereinafter to be described,

may be used in connection with any of thewell-known forms of self-propelled dump.- ing vehicles. In the drawings I have shown a conventional form of self-propelled dump' ing vehicle, wherein 5 indicates the running Fig. 3 is a view gear, 6 the sides of the frame, 8 the tiltable body, and 9 the motor.

The dumping device ofthis invention is indicated generally by a, and is located between the drivers seat 10 and the body 8. In its construction the device includes a base plate 11, the sides of which are suitably fastened, as by bolts 12, to the sides 6 of the frame, and the ends of which are likewise fastened to cross'pieces 13, which are also secured at their ends to the sides 6. Base plate 11 may form part of or be otherwise suitably connected so as to support a casing 14, and a vertical guide 15, which guide may be formed integral with or otherwise suitably secured to casing 14. Guide 15 is provided for ram 16, and may also form a sup- 20, and a suitable flexible hoisting element,

as a cable 21,- is trained under pulley l7 and over pulleys 19 and 20, and has its opposite .ends secured to hangers 22 which depend from the free end of body 8. Obviously, with this construction, upward movement on the part of ram 16 will elevate the free end of body 8, and thereby effect the dumping of the material in the said body. The mechanism for operating the ram to raise and lower is also designed to effect automatically the disconnectingtherewith of the motor when the free end of body 8 has beenlowered to its normal horizontal position or elevated to the required degree. In the present embodiment the mechanism is shoWn to include a screw, and a clutch-like mechanism connecting the screw andthe motor of the vehicle. The screw 23 is arranged in the screw-threaded bore of ram 16. Guide 15 is'non-cyli-ndrical in cross sectional contour, and so too is the portion of ram 16 arranged inthe guide. Screw 23 has its lower end portion projecting into casing 14 and enlargements in the form of collars 2425 at the opposite ends of the bearing provided -mentioned includes in the embodiment shown, a shaft 26 journaled in bearings in the front and rear ends of casing 14,- a connection between the forwardly extending end portion of the shaft 26 and the motor of the vehicle and an adjustable connection between the shaft 26 and the screw. The connection between shaft 26 and the motor is shown in the present embodiment to consist of a sprocket chain 27 which is trained around a sprocket Wheel 28 on the forwardly extending end of shaft 16, and also around a sprocket wheel 29 on the end of a shaft 30 which may be the crank shaft of said motor or'a jack shaft driven thereby, as shown in Fig. 1. The adjustable connection is shown in the present embodiment to consist of a pair of bevel gears 31 and 32, splinedon shaft 26 and located in casing 14 and a bevel gear 33'fast on the end portion of screw 23 which projects into casing 14. Gear wheel 33 projects into the space between gear wheels 31 and 32, and lies in the path ofillustration, as a yoke 34 which has forks 35 and 36 at the ends of its arms 37, which forks enter grooves in "the peripheries of the hubs 38 of gear wheels 31 and 32. Yoke 34 is supported by a shelf 56 in casing 14, and

pms 57 which pass through slots 39 in the said yoke serve to fasten it to said shelf and limit its movement in either direction. The yoke may be operated either manually, as by a. hand operating device 40, or mechanically or by the movement of the ram into contact with an operating member. The hand operated device is herein shown as a hand lever, and is fulcrumed on the body of the vehicle and adjacent to thedrivers seat 10, whereby easy access thereto may be had. Connection between the said lever; and the said yoke is effected by means of a connecting rod 43 one end of which is pivoted to lever .40, and the other end similarly con nected to'a lug 44 which projects laterally from yoke 34 and through a slot in one side of casing 14. The mechanically. operated member is in the present embodiment shown to consist of a rod, 41 arranged exteriorly of guide 15, and arranged to slide vertically in a bearing 45 on said guide. The lower end portion of rod 41 extends through an opening in top of casing 14, and is connected by a pin and slot connection to one arm of a bell crank 46 whose fulcrum is a pin 47 secured to a side wall of casing 14. The other arm of the bell crank is forked and straddles one of the arms 37 of the yoke, as shown in Fig. 4. The upper end portion of rod 41 is bent inwardly as indicated by 48, and alines with a notch 49 in the upper end of guide 15 which notch alines with a notch 50 opening through a side and the base of the head 51 of the ram 16. The recess 50 forms a lateral extension of a longitudinal groove 52 formed in a side of the ram 16, and extending to a point adjacent to the lower end thereof.

In the operation of the device and when the bent end portion 48 of rod 41 is midway between the ends of notches 49 and 50, both gear wheels 31 and 32 will be out of mesh with gear wheel 33. Now with the vehicle body 8 in the position shown by full lines in Fig. 1 and the pawl of hand lever 40 in the intermediate or neutral notchof quadrant 53, a movement on the part of the operator which will move the lever 40 to the notch 55 for instance, will move gear wheel 32 in mesh with gear wheel 33 so rotary motion will be transmitted to screw 23, whereupon ram 16 will be caused to ascend and elevate the forward end of body 8.

It will be noted thatin shifting gear wheel 32 out of the neutral position yoke 34 rocked bell crank'46 and the latter moved rod 41 downwardly until the bent end 48 thereof entered notch 49. noted that when the said bent end 48 is in notch 49, it lies in the path of upward movement of the lower end of groove 52; consequently when the lower end of said groove abuts the said inturned portion48 during the upward movement of the ram, rod 41 is caused to move upwardly and thereby rock bell crank 46 which by reason of its connection with the arm 37 of the yoke 34 operates the yoke to restore gear wheel 32 to the neutral position. Obviously, when gear wheel 32 is in the neutral position upward movement of the ram will cease. It will be understood that the length of groove 52 will be so proportioned to the length of ram 16 and so arranged that its lower end will not operate rod 41 until vehicle body 8has been tilted to the conventional angle required with devices of this kind.

It will be understood that when the rod 41 :and the part connected thereto operate yoke 34, as previously described, connecting rod 43 will move hand lever 40 to the neutral position since the pawl or dog carried thereby is of the well-known type, arranged so as to yield under pressure on the said lever.

When lever 40 is arranged so that its pawl enters notch 54 gear wheel 31 is thrown in mesh with gear wheel 33, and at the same time bent end 48 of rod 41 is elevated for an appreciable distance above theedge of guide 15. -Now when the turning of gear wheel 33 by gear wheel 31 causes screw 23 to turn in its normal horizontal position. Upon the the required direction to lower ram 16, the

application of downward pressure on rod 41 that element rocks bell crank 46 whereupon gear wheel 31 is moved into the neutral and the downward movement of body 8 stopped. Simultaneous with this action hand lever 40 is moved to neutral position.

The parts thus far described will be formed of metal and manufactured by any of the approved methods.

What is claimed as new is:

1. In a motor propelled dumping vehicle, the combination with the body of the vehicle and the motor of the vehicle; of a hoist interposed between the body and the motor and including a stationary part and a substantially vertically movable part guided in the stationary part, a flexible element connected to the body, to the movable part and to the stationary part, rotatable mechanism including a screw connected with the stationary part and with the movable part for operating the latter to move vertically, and a connection between the mechanism and the motor.

2. In a motor propelled dumping vehicle, the combination with the body of the vehicle and the motor of the vehicle; of a hoist interposed between the body and the motor and including a stationary part and a hOl. low screw threaded and substantially vertically movable part, the same being guided in the stationary part, a flexible element connected to the body, to. the movable part and to the stationary part, a screw rotatablymounted on the stationary part and cooperating with the screw threads of the movable part to move the same vertically, mechanism for rotating the screw and detachably connected thereto, and a connection between the said mechanism and the motor.

3. In a motor propelled dumping vehicle, the combination with the body of the vehicle and the motor of the vehicle; of a hoist interposed between the body and the motor and including a stationary part and a hollow screw threaded and substantially vertically movable part, the same being guided in the stationary part, a flexible element connected to the body, to the movable part and to the stationary part, a screw rotatably mounted on the stationary part and cooperating with the screw threads of the movable part to move the same vertically, mechanism for rotating the screw and detachably connected thereto, manually operable means For detachably connecting the said mechanism from the screw, and a connection between the said mechanism and the motor.

4. In a motor propelled dumping vehicle, the combination with the body of the vehicle and the motor of the vehicle;-of a hoist interposed between the body and the motor and a connection between the said mechanism and the motor.

5. In a motor propelled dumping vehicle the combination with the body of the vehicle and the motor; of a hoist interposed between the body and the motor and including a stationary part and a substantially vertically movable part, a flexible element connected to the body and to the said movable part, rotatable mechanism including a screw connected to the movable part for operating the same to move vertically, a shaft operated by the motor and means detachably connecting the shaft with the screw and operating to turn the latter in one direction, and means disposed so as to operate automatically and disconnect the screw operating means from the screw when the movable member has moved vertically for a predetermined distance.

6. In a motor propelled dumping vehicle the combination with the body of the vehicle and the motor; of a hoist interposed between the body and the motor and including a stationary part and a substantially vertically movable part, a flexible element connected to the body and to the said movable part, rotatable mechanism including a screw connected to the movable part, an adjustable device connected to the motor and adapted for operating the screw to turn in either of two directions and thereby cause the movable element to move upwardly and downwardly, manually operable means for adjusting said device to turn the screw in one direction so as to cause the movable member to move vertically upward, and means arranged so as to operate automatically and adjust the said device to turn the screw in the opposite direction when the movable member has moved upwardly for a predetermined distance.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses, this 11 day of October 1915.

DANIEL BIRSTLER. Witnesses:

ELIZABETH J. BIRSTLER, M. E. LAUGHLIN. 

